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TITBITS

1. There are 4 persons (A, B, C and D) who want to cross a bridge in night.

A takes 1 minute to cross the bridge.
B takes 2 minutes to cross the bridge.
C takes 5 minutes to cross the bridge.
D takes 8 minutes to cross the bridge.
There is only one torch with them and the bridge cannot be crossed without

the torch. There cannot be more than two persons on the bridge at any time,
and when two people cross the bridge together, they must move at the slower
person’s pace. How can they all cross the bridge in 15 minutes?

2. Policeman decided to punish the Prisoner and asked him to make a
statement. The Prisoner should make such a statement so that he would be
alive. If the statement is held true by Policeman, the Prisoner will be hanged
to death and if the statement is held false, the Prisoner will be shot dead.

Source: https://www.geeksforgeeks.org/puzzles/#Puzzles